Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-21-025780-index-headers.html | 2021-11-09 07:30:21 | |
| 0001437749-21-025780-index.html | 2021-11-09 07:30:21 | |
| 0001437749-21-025780.txt | 2021-11-09 07:30:21 | |
 0001437749-21-025780-xbrl.zip | 11065 | 2021-11-09 07:30:21 |
 a01.jpg | 48081 | 2021-11-09 07:30:21 |
 a02.jpg | 84307 | 2021-11-09 07:30:21 |
 a03.jpg | 68668 | 2021-11-09 07:30:21 |
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 a08.jpg | 56068 | 2021-11-09 07:30:21 |
 a09.jpg | 52066 | 2021-11-09 07:30:21 |
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 a11.jpg | 41110 | 2021-11-09 07:30:21 |
 a12.jpg | 45097 | 2021-11-09 07:30:21 |
 a13.jpg | 38612 | 2021-11-09 07:30:21 |
 a14.jpg | 47865 | 2021-11-09 07:30:21 |
 a15.jpg | 36864 | 2021-11-09 07:30:21 |
 a16.jpg | 62185 | 2021-11-09 07:30:21 |
 a17.jpg | 66933 | 2021-11-09 07:30:21 |
 a18.jpg | 41474 | 2021-11-09 07:30:21 |
| ex_304316.htm | 11187 | 2021-11-09 07:30:21 |
| FilingSummary.xml | 1822 | 2021-11-09 07:30:21 |
| Financial_Report.xlsx | 5792 | 2021-11-09 07:30:21 |
| hpe20211105b_8k.htm | 30848 | 2021-11-09 07:30:21 |
| hpe20211105b_8k_htm.xml | 4228 | 2021-11-09 07:30:21 |
| hpk-20211109.xsd | 3975 | 2021-11-09 07:30:21 |
| hpk-20211109_def.xml | 13704 | 2021-11-09 07:30:21 |
| hpk-20211109_lab.xml | 17956 | 2021-11-09 07:30:21 |
| hpk-20211109_pre.xml | 13730 | 2021-11-09 07:30:21 |
| MetaLinks.json | 21944 | 2021-11-09 07:30:21 |
| R1.htm | 44535 | 2021-11-09 07:30:21 |
| report.css | 2767 | 2021-11-09 07:30:21 |
| Show.js | 1085 | 2021-11-09 07:30:21 |